>My 87 VW Westy lost power after about a six hour drive, only able to go
>about 50-55 mph.  The Mechanic has checked most of the sensors and cannot
>find the problem yet.  His next steps are to start replacing things, check
>for exhaust obstruction, pressure test etc.  Anyone ever experience this
>problem before?  Please let me know, Its already cost $180 just for
>investigating.

Sometimes it is the simplest thing. . .start with easy things.
Fuel filter?
Fuel pressure regulator?
Catalytic converter plugged?  (a chunk of the innards lodged sideways once,
took me days to find this out)

All of these things have caused the same problem in my van(s).
Humans always have the tendency to imagine the worst, and hungry mechanics
will not disagree with you.  Hope your problem turns out to be something
simple and cheap. . .

See ya,

Gary Thaxter
74 transporter panel
78 westy
85 kombi
86 syncroGL